hmmm...maybe "ugly duckling" and "black sheep"? meant the same thing?
but ya know..way back, if a woman didn't have a beau and marriage prospects in her early teens..she was thought of as an old maid.
my mother's aunt..who was like my grandmother, since mine passed away when i was an infant....was a beautiful woman. but she wanted a career. that just wasn't the way in the 20's. she never did get married.
beauty comes from inside. it radiates no matter what the "shell" is.